| // Copyright 2023 The Cobalt Authors. All Rights Reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #include "cobalt/browser/client_hint_headers.h" |
| |
| #include <string> |
| #include <vector> |
| |
| #include "base/strings/strcat.h" |
| |
| namespace cobalt { |
| namespace browser { |
| namespace { |
| |
| // Note, we intentionally will prefix all headers with 'Co' for Cobalt. |
| const char kCHPrefix[] = "Sec-CH-UA-Co-"; |
| |
| // Helper function to check for empty values and add header prefix. |
| void AddHeader(std::vector<std::string>& request_headers, |
| const std::string& header, const std::string& value) { |
| if (!value.empty()) { |
| request_headers.push_back(base::StrCat({kCHPrefix, header, ":", value})); |
| } |
| } |
| |
| } // namespace |
| |
| // This function is expected to be deterministic and non-dependent on global |
| // variables and state. If global state should be referenced, it should be done |
| // so during the creation of |platform_info| instead. |
| std::vector<std::string> GetClientHintHeaders( |
| const UserAgentPlatformInfo& platform_info) { |
| std::vector<std::string> headers; |
| |
| AddHeader(headers, "Android-Build-Fingerprint", |
| platform_info.android_build_fingerprint()); |
| |
| AddHeader(headers, "Android-OS-Experience", |
| platform_info.android_os_experience()); |
| |
| return headers; |
| } |
| |
| } // namespace browser |
| } // namespace cobalt |